Access Control; Voltage Reducing Device - EWM T 4.02 - AC/DC Comfort 2.0 Operating Instructions Manual

4.4

Access control

The machine control can be locked to secure it against unauthorised or unintentional adjustment. The
access block has the following effect:
•
The parameters and their settings in the machine configuration menu, Expert menu and operation
sequence can only be viewed but not changed.
•
Welding procedure and welding current polarity cannot be changed.
The parameters for the access block are configured in the machine configuration menu > see 4.6 chapter.
Enabling the access block
•
Enter the access code for the access block: select the
(0–999).
•
Enable access block: Set parameter to
Disabling the access block
•
Enter the access code for the access block: Select the
999).
•
Disable access block: Set parameter to
The only way to disable the access block is to enter the selected numerical code.
Changing the access block
•
Enter the access code for the access block: Select the
999).
•
Change the access block: Once the display shows
•
If the entry is incorrect, the display shows
The factory setting for the code is
4.5

Voltage reducing device

Only machine variants with the (VRD/AUS/RU) code are equipped with a voltage reduction device (VRD).
The VRD is used for increased safety, especially in hazardous environments such as shipbuilding, pipe
construction or mining.
A VRD is mandatory in some countries and required by many on-site safety instructions for power
sources.
The VRD > see 3 chapter signal light is illuminated when the voltage reduction device is operating without
fault and the output voltage is reduced to a value specified in the relevant standard (see technical data).
099-00T402-EW501
24.04.2018
Functional characteristics
menu and enter the valid numerical code
.
.
, assign a new numerical code (0–999).
.
.
menu and enter the numerical code (0–
menu and enter the numerical code (0–
Access control
45